Muhammad ibn Abd Allah al-Ansari

Abu Ayyub al-Ansari, born Khalid ibn Zayd in Medina, belonged to the Banu Najjar clan of the Banu Khazraj tribe, part of the Ansar who supported Prophet Muhammad after the Hijra. He was a close companion and standard-bearer of the Prophet, and played a significant role in early Islamic history, including being the waqif of the land for Al-Masjid an-Nabawi. Abu Ayyub served as governor of Medina during Ali ibn Abi Talib's caliphate and participated in numerous battles from the Prophet's time through the reign of Muawiyah I. In his final military campaign, he died during the First Arab Siege of Constantinople and was buried near the city walls. His descendants spread across the Arabian Peninsula and the Indian subcontinent. His tomb became a revered site in Ottoman Istanbul, with a mosque built in his honour.